TLP121(Y-TPR,F)

Overview

The TLP121(Y-TPR,F) is a single-channel transistor output optocoupler manufactured by Toshiba Semiconductor and Storage. It integrates a gallium arsenide infrared emitting diode with a phototransistor in a compact plastic DIP-4 package. The device provides an isolation voltage of 3750 Vrms and a minimum collector-emitter breakdown voltage of 80 V. It supports a maximum forward current of 50 mA and features a typical current transfer ratio of 100% at the specified rank. The unit operates within a temperature range of -25 °C to 85 °C.

Feature Summary

• Integrates a GaAs infrared LED with a phototransistor for optical signal transmission
• Provides high electrical isolation between input and output circuits
• Designed for surface mount assembly in small outline packages

Applications

• Office machines
• Programmable controllers
• AC/DC input modules
• Telecommunication equipment

Procurement Notes

Verify the specific suffix (Y-TPR,F) against official Toshiba documentation to confirm exact binning, tape-and-reel specifications, and RoHS compliance status. Ensure the requested variant matches the required current transfer ratio rank and packaging format before finalizing procurement orders.

Selection Notes

Select this component when a low-cost, general-purpose transistor output optocoupler is required for basic digital isolation. Consider the 80 V collector-emitter voltage limit and standard switching speeds. Verify that the DIP-4 footprint aligns with the target PCB layout constraints.

Part Context

This part belongs to the TLP121 series of mini flat couplers from Toshiba. The series is characterized by its small outline form factor suitable for surface mounting. It serves as a fundamental isolation component for interfacing low-voltage control logic with higher voltage loads or different ground domains.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.